Pathways and Environmental Impacts of Methane Migration: Case Studies in the Marcellus Shale, USA

Figure 11

Plot of δD against δ¹³C (per mil) for methane sampled from Sugar Run stream samples (colored squares) and groundwater near site 1.5 (green circles) [11], and Dimock Meshoppen Creek, US MC 2 (hollow squares), from the present study. Black crosses represent Marcellus gas well compositions in Lycoming County [57]. Regions of microbial and thermogenic type gases [58].